Finding myself in situations where basic logging would be useful but most Logging tools seem too fancy, I quickly implemented this to have something to use. IT IS STILL INCOMPLETE. I will only add features as I need them, so don't expect miracles.
Pull out the source, read it. Code is short and stupid and enough (2 classes so far) that it should not be hard to use. Package is me.faeriol.utils
It's Java! This package attempts to remain as small, portable and independant as possible. That is: It should never rely on external packages.